<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>
<body>
  <script>
    var age = 20
    var username = 'lisi'
    var gender = 'male'

    // var obj = {
    //   age: age,
    //   username: username,
    //   gender: gender
    // }

    // ES6里面可以简写
    var obj = {
      age,
      username,
      gender
    }
    console.log(obj)

  </script>
</body>
</html>